1.10000mAh capacity battery can be use long time, when you are outdoor and on trip do not worry you phone or other USB devices is no power. It can help you have a happy long vacation without worried. LED display can see the percentage of the remaining capacity. 2.This high capacity external battery has Dual USB port, you can charge two devices at the same time. A stylish lightweight designs provides easy fit into your pocket or bag, easy to carry 3.Premium Quality Li-Ion Cells

4.Built-in with polymer battery cells ensures reliability; 500 + recharger cycles over the life of the battery.